The Briggs & Stratton 84004577 Engine Carburetor helps deliver the proper fuel and air mixture for efficient engine combustion and reliable operation. This replacement carburetor regulates fuel flow and combines it with incoming air before supplying the mixture to the engine. Proper fuel metering supports smooth starting, consistent performance, and dependable operation. Replacing a w... https://www.wholetoolbox.com/briggs-stratton-84004577-engine-carburetor/84004577.html